JP5188474B2 - Normally closed silent hub ratchet structure - Google Patents

Description

  The present invention relates to a bicycle hub structure, and in particular, the ratchet is normally closed, and the ratchet member is not interlocked with the forward and backward rotation of the hub casing. The present invention relates to a normally closed silent hub ratchet structure configured not to roll.

  The conventional bicycle hub ratchet structure includes a ratchet disk 50, a hub 60, and a mandrel 70 as shown in FIGS. The ratchet disk 50 is a tubular body, and a tooth disk 51 and a ratchet seat 52 are installed on the circumferential surface, and a plurality of ratchet holes 521 are formed on the circumferential surface of the ratchet seat 52.

  Correspondingly, a plurality of ratchets 53 are installed, and an elastic member 54 is installed between the ratchet 53 and the ratchet hole 521. The hub 60 is a tubular body, and a ratchet disk chamber 61 is formed on one side thereof. A bevel 611 is formed in the ratchet disk chamber 61. The mandrel 70 is a cylindrical body, male threads are formed at the front and rear ends, and a stop ring 71 is installed at an appropriate position in the middle. A plurality of bearings 72 and positioning members 73 are installed between the ratchet disk 50 and the hub 60 and the mandrel 70, and are fixed to the hub 60 by the bearings 72, and the ratchet seat 52 is a ratchet disk chamber 61 of the hub 60. It is stored in.

  When the hub ratchet structure is operated, the ratchet 53 is urged outward by the elastic member 54 and is kept open in a normal state to abut against the bevel 611 of the hub 60, so that the ratchet disc 50 is During forward rotation, the ratchet 53 comes into contact with the bevel 611 and the hub 60 is interlocked by the ratchet disk 50 via the ratchet 53.

  Further, when the ratchet 53 rotates in the reverse direction, the ratchet 53 is interlocked by the bevel 611 and the elastic member 54 to perform a swinging motion, that is, the hub 60 is not interlocked by the ratchet 53. When the hub 60 rotates forward, the ratchet 53 is not interlocked by the hub 60, and when the hub 60 rotates reversely, the ratchet 53 is driven by the bevel 611 in the reverse direction, and the ratchet disc 50 Reverses.

The conventional hub ratchet structure as described above has the following disadvantages to be improved.
1. When the ratchet 53 rotates reversely, the ratchet 53 performs a rocking motion in conjunction with the bevel 611 and the elastic member 54. That is, the hub 60 is not interlocked by the ratchet 53, and there is a possibility that friction and noise may be generated by the above-described shaking operation.

  2. When the hub 60 rotates forward, the ratchet 53 is not interlocked by the hub 60. Conversely, when the hub 60 rotates backward, the ratchet 53 is reversed by the bevel 611. When driven, the ratchet disc 50 rotates reversely, and the tread is interlocked by the ratchet disc 50. Since the treadle rolls when the bicycle is backed, the user may be damaged.

  The inventor diligently and carefully researched to eliminate the above-mentioned drawbacks, and as a result of studying by utilizing science, attention was paid to the fact that the above-mentioned disadvantages can be effectively eliminated as follows. Based on the findings, the present invention has been completed with a reasonable design.

  It is an object of the present invention to project a control block at a tooth disk seat end, and to interlock a ratchet interlocking column by a control block interlocking groove, and the ratchet is restricted by a control block and a stop ring in the ratchet groove. In addition, due to the resistance of the dump member, the opening and closing operations are performed, and it can be maintained in the closed state under normal conditions.When the hub casing is rotated back and forth, the ratchet member is not interlocked, and when the bicycle is pushed and moved, Both of the treads are effective in preventing rolling, and can provide a normally closed silent hub ratchet structure that can move a bicycle silently and has excellent practicality.

Thus, according to the first aspect of the present invention, there is a penetrating shaft hole, and a shaft is pivotally attached to the shaft hole in accordance with the bearing, and a stop sleeve is fitted on the shaft. In addition, a plurality of control blocks are installed in a ring shape in the axial direction, and an interlocking groove is formed in the center of the control block so as to be recessed, and the shaft end of the interlocking groove is inclined outward to A tooth disk seat in which an outer end is formed, a shaft is installed to surround the control block end of the tooth disk seat, and a sliding portion is formed;
There are a ratchet seat and a ratchet. A via hole is formed in the ratchet seat, and a sliding portion of the tooth disk seat is fitted in the via hole, and a plurality of ratchet grooves are inclined inwardly on the outer wall surface of the ratchet seat. A ratchet hole is formed at a relative depth of the ratchet groove, the ratchet is located in the ratchet groove, and the ratchet together forms a spindle portion and is pivotally attached to the ratchet hole. A ratchet member in which an interlocking column protrudes at one end, both of the interlocking columns are slidably installed in the interlocking groove of the tooth disk seat, and a positioning block is installed on one side in the axial direction of the ratchet seat ,
Using the perforation, the shaft is fitted and positioned so that one surface is attached to one side of the ratchet seat, the positioning groove is formed, and the positioning groove and the positioning block of the ratchet seat engage and operate synchronously, A stop ring in which a dumping member is attached to the perforation, the inner edge of which closely adheres to the stop sleeve;
A storage space is formed in the axial direction, a bevel ring is locked to the inner wall, a built-in bearing is fitted to the shaft, and the control block of the retaining ring, ratchet member, and tooth disk seat is stored in the storage space. The bevel ring is in the form of a ring and a hub casing installed at the outer end of the ratchet;
A normally closed silent hub ratchet structure is provided.

  According to the invention of claim 2, the tooth disk seat has a plurality of tooth disk grooves formed in the axial direction on the ring-shaped surface, and a plurality of tooth disks are fitted in the tooth disk grooves. The normally closed silent hub ratchet structure according to claim 1, wherein the tooth disk seat and the tooth disk can be operated synchronously.

  According to a third aspect of the present invention, there is provided the normally closed silent hub ratchet structure according to the first aspect, wherein the tooth disk seat is integrally formed with the tooth disk to form a single tooth disk. .

  According to the invention which concerns on Claim 4, the said tooth disc seat is a tooth disk from the ratchet seat in which the check ditch | groove was formed between control blocks, and was slidably installed in the sliding part of the tooth disc seat. The normally closed silence according to claim 1, wherein the check block protrudes toward the seat end, the check block can slide in the check groove, and the tooth disk seat and the ratchet seat are synchronized. A habrachet structure is provided.

  According to the invention according to claim 5, the tightening ring groove is formed in a ring shape so as to surround the via hole on the outer wall surface of the ratchet seat and the outer surface of the ratchet, and the elastic member is provided in the tightening ring groove. The normally closed silent hub ratchet structure according to claim 1, wherein the ratchet is fitted and tightened toward the ratchet groove.

  The normally closed silent hub ratchet structure according to the present invention comprises a tooth disk, a ratchet member, a retaining ring, and a hub casing, as is apparent from the description of the above claims.

  The tooth disk seat has a shaft hole that passes through. A shaft is pivotally attached to the shaft hole in accordance with the bearing, and a stop sleeve is fitted on the shaft. A ring is provided in the axial direction on the end face of the tooth disk seat. A plurality of control blocks are installed, and an interlocking groove is formed in the center so as to be recessed. In addition, the shaft end of the interlocking groove is inclined outward to form an inner end and an outer end. Further, a shaft is installed at the end of the control block so as to surround it, and a sliding portion is formed.

  The ratchet member includes a ratchet seat and a ratchet, and a via hole is formed in the ratchet seat. A sliding portion of the tooth disk seat is fitted in the via hole, and a plurality of ratchet grooves are formed on the outer wall surface of the ratchet seat so as to be inclined inward. Further, a ratchet hole is formed at a considerable depth of the ratchet groove, the ratchet is located in the ratchet groove, and the ratchet together forms a spindle portion and is pivotally attached to the ratchet hole. Further, an interlocking column protrudes from one end of the ratchet, and both the interlocking columns are slidably installed in the interlocking groove of the tooth disk seat.

  In addition, the retaining ring is provided with a positioning block on one side in the axial direction of the ratchet seat. Using the drilling, the shaft is fitted on one side of the ratchet seat so that one surface sticks to one side of the ratchet seat, and a positioning groove is formed, and the positioning groove and the positioning block of the ratchet seat engage and operate synchronously. In addition, a dumping member whose inner edge is closely attached to the sleeve is installed in the perforation.

  The hub casing has a storage space in the axial direction, a bevel ring is locked to the inner wall, a built-in bearing is fitted on the shaft, and the control ring, ratchet member and tooth disk seat are controlled in the storage space. The block is accommodated, and the bevel ring is installed in a ring shape at the outer end of the ratchet.

  Hereinafter, the features and technical contents of the present invention will be described in detail with reference to the drawings. However, those drawings and the like are for reference and explanation, and the present invention is not limited thereto.

  The normally closed silent hub ratchet structure according to the present invention will be described with reference to FIGS. 1 to 3.

  The normally closed silent hub ratchet structure includes a tooth disk seat 10, a ratchet member 20, a retaining ring 30, and a hub casing 40.

  The tooth disk seat 10 has a penetrating shaft hole 11, and a shaft 12 is pivotally attached to the shaft hole 11 in accordance with the bearing 101. A stop sleeve 121 is fitted on the shaft 12, and a plurality of control blocks 13 are installed in a ring shape in the axial direction on the end face of the tooth disk seat 10, and the interlocking groove 14 is recessed in the center of the control block 13. Is formed.

  Further, the shaft 12 end of the interlocking groove 14 is inclined outward, whereby an inner end 141 and an outer end 142 are formed. In addition, a shaft 12 is further installed at the end of the control block 13 of the tooth disk seat 10 so as to surround it, and a sliding portion 15 is formed.

  The ratchet member 20 includes a ratchet seat 21 and a ratchet 22, a via hole 211 is formed in the ratchet seat 21, and the sliding portion 15 of the tooth disk seat 10 is fitted into the via hole 211. A plurality of ratchet grooves 212 are formed on the outer wall surface of the ratchet seat 21 so as to be inclined inward. Further, a ratchet hole 213 is formed at a considerable depth of the ratchet groove 212, the ratchet 22 is located in the ratchet groove 213, and the ratchet 22 together forms a spindle part 221, and pivots on the ratchet hole 213. Worn.

  An interlocking column 222 protrudes from one end of the ratchet 22, and both the interlocking columns 222 are slidably installed in the interlocking groove 14 of the tooth disk seat 10. Further, the tooth disk seat 10 is formed with a check groove 131 between the control blocks 13.

  Further, the check block 214 protrudes from the ratchet seat 21 slidably installed on the sliding portion 15 of the tooth disk seat 10 toward the end of the tooth disk seat 10, and the check block 214 is placed in the check groove 131. The tooth disk seat 10 and the ratchet seat 21 can be operated synchronously.

  Further, tightening ring grooves 215 and 223 are formed in a ring shape on the outer wall surface of the ratchet seat 21 and the outer surface of the ratchet 22 so as to surround the via hole 211.

  Further, the elastic member 23 is fitted into the tightening ring grooves 215 and 223, the ratchet 22 is tightened toward the ratchet groove 212, and the positioning block 216 protrudes on one side in the axial direction of the ratchet seat 21. .

  In addition, the elastic member 23 is a spring coil in which a notch 231 is formed, and an inwardly curved fixed portion 232 is formed at one end edge of the notch 231.

  Further, the fixing portion 232 penetrates from the inside of the tightening ring groove 215 to the fixing hole 217 of the ratchet seat 21, whereby the elastic member 23 is fixed. The retaining ring 30 is fitted into the shaft 12 so that one surface is attached to one side of the ratchet seat 21 by using the perforations 31, and a positioning groove 32 is formed, and the positioning groove 32 and the ratchet seat 21 are formed. The positioning block 216 engages and operates synchronously.

  A dump member 33 is installed in the perforation 31. The dump member 33 has a mainspring shape, and its inner edge closely adheres to the stopper sleeve 121, and is urged against the inner wall of the perforation 31 by the elasticity of the dump member 33, whereby the rolling resistance of the stopper ring 30 is increased. Is formed.

  The hub casing 40 is formed with a storage space 41 in the axial direction, and a bevel ring 42 is locked to the inner wall. The hub casing 40 is fitted on the shaft 12 with a built-in bearing 401.

  The retaining ring 30, the ratchet member 20, and the control block 13 of the tooth disk seat 10 are stored in the storage space 41.

  Further, the bevel ring 42 is installed at the outer end of the ratchet 22 in a ring shape. According to the above structure, the ratchet 22 is positioned in the ratchet groove 212 by the control block 13 and the retaining ring 30, and by opening and closing with the resistance of the dump member 33, under normal conditions, It can be maintained in a closed state, and a silent interlocking effect can be obtained.

  According to the present invention, as shown in FIGS. 2 and 3, the tooth disk seat 10 has a plurality of bearings 101 installed in the shaft hole 11, and the shaft 12 penetrates in the axial direction of the bearing 101. The tooth disk seat 10 can roll on the shaft 12. The ratchet member 20 includes a ratchet seat 21 and a ratchet 22, both of which are installed in the ratchet groove 212 of the ratchet seat 21, and the spindle portion 221 swings along the ratchet hole 213. It is pivotally attached to.

  Further, the elastic member 23 is fitted into the tightening ring grooves 215 and 223 formed by the ratchet seat 21 and the ratchet 22, and the ratchet 22 is tightened into the ratchet groove 212 by the elastic member 23.

  The ratchet member 20 is fitted on the shaft 12 by the via hole 211 of the ratchet seat 21 and is slidably installed on the sliding portion 15 of the tooth disk seat 10.

  The number of ratchet grooves 212 of the ratchet seat 21 is the same as the number of control blocks 13 of the tooth disk seat 10, and the ratchet 22 is pivotally mounted in the ratchet groove 212. Both are slidably installed in the interlocking groove 14 of the control block 13. The control block 13, the ratchet groove 212, and the ratchet 22 are installed in a ring shape in three sets. The end of the ratchet member 20 is fitted on the shaft 12, and the stop ring 30 is engaged with the positioning groove 32 and the positioning block 216 of the ratchet seat 21. Thereby, the operation of the retaining ring 30 and the ratchet member 20 is synchronized.

  A dump member 33 is installed in the perforation 31 of the stop ring 30. In addition, the stop sleeve 121 is inserted into the shaft 12, and the dump member 33 is sandwiched between the stop ring 30 and the stop sleeve 121, so that rolling resistance is generated at the end of the stop sleeve 121.

  Further, both ends of the retaining sleeve 121 are in contact with the bearing 101 at the end of the tooth disk seat 10 and the bearing 401 at the end of the hub casing 40, respectively, and the spacing between the tooth disk seat 10 and the hub casing 40 is formed by the retaining sleeve 121. Finally, the control block 13, the ratchet member 20, and the retaining ring 30 are stored in the storage space 41 of the hub casing 40.

  Further, since the bearing 401 at the end of the hub casing 40 is penetrated on the shaft 12, it can freely roll on the shaft 12, and after the hub casing 40 is coupled, the bevel ring 42 is connected to the ratchet 22. And the assembly is finished as described above.

  According to the present invention, as shown in FIGS. 2 to 5, a hub ratchet structure is installed on the rear wheel of a bicycle, and a tooth disk (not shown) is coupled by the tooth disk seat 10. Are coupled by a chain that is coupled to the end of the bicycle tread, and the shaft 12 is coupled to the frame.

  Further, when the hub casing 40 is coupled to the rear wheel of the bicycle and the bicycle is not in use, the ratchet 22 is positioned in the ratchet groove 212 by tightening the elastic member 23. Further, since the retaining ring 30 is installed outside the ratchet seat 21, the lateral displacement of the ratchet 22 can be prevented. Further, the interlocking column 222 of the ratchet 22 is located at the inner end 141 of the interlocking groove 14, and the ratchet 22, the hub casing 40, and the bevel ring 42 do not come into contact with each other due to the contracted state of the ratchet 22. When the treadle is stepped on, the tooth disk seat 10 is interlocked by a chain, and the tooth disk seat 10 rolls. At the same time, the ratchet member 20 receives the resistance of the dump member 33 on the stop ring 30, so that it easily rolls. It becomes impossible to move.

  As a result, the rotational discrepancy between the tooth disk seat 10 and the ratchet member 20 occurs. At this time, the interlocking groove 14 of the tooth disk seat 10 rolls in the axial direction, and the interlocking column 222 of the ratchet 22 is moved from the inner end 141. Displacement to the outer end 142 causes the ratchet 22 to swing to the outer end of the ratchet groove 212 with the spindle portion 221 as the axis.

  As a result, the interlocking column 222 of the ratchet 22 is interlocked by the interlocking groove 14 of the tooth disk seat 10, so that the tooth disk seat 10 and the ratchet member 20 are interlocked, and at the same time, the ratchet 22 is connected to the ratchet groove 212. The ratchet 22 abuts on the surrounding bevel ring 42 when the hub casing 40 is swayed outside, and the hub casing 40 can be interlocked and rolled by the bevel ring 42.

  That is, when the rear wheel of the bicycle rolls in conjunction with each other and when the treadle is rotated in the reverse direction, the tooth disk seat 10 rolls in the opposite direction as shown in FIGS. In the tooth disk seat 10, the interlocking column 222 of the ratchet 22 is interlocked in the reverse direction also in the interlocking groove 14 of the control block 13 、, and the interlocking column 222 slides from the outer end 142 to the inner end 141.

  That is, the ratchet 22 is pushed into the ratchet groove 212, so that the ratchet 22 and the bevel ring 42 at the end of the hub casing 40 are not in contact with each other.

  As a result, noise generated by the continuous collision of the ratchet 22 and the bevel ring 42 can be eliminated, and structural failure due to the collision can be prevented, and the hub casing 40 is interlocked by the rear wheel end. When rolling, the ratchet 22 is driven by the bevel ring 42, and the ratchet 22 is stably closed in the ratchet groove 212 in accordance with the resistance generated at the end of the dump member 33 of the retaining ring 30.

  That is, the ratchet 22 and the bevel ring 42 are maintained in the normally open state. Therefore, even when the hub casing 40 is rotated forward and backward, the ratchet member 20 is not interlocked. That is, when the bicycle is pushed forward, the tread does not roll, and a silent effect is thereby obtained. It can be observed that the practicality is also improved.

  As shown in FIGS. 8 and 9, the tooth disk seat 10 is practically formed with a plurality of tooth disk grooves 16 in the axial direction on the ring-shaped surface, and a plurality of tooth disks (see FIG. (Not shown) is inserted, and the tooth disk seat 10 and the tooth disk are synchronized to have a plurality of tooth disks. Further, the tooth disk seat 10 is integrally formed with the tooth disk 17 to be in a single tooth disk 17 state.

  From the above description, it is clear that the present invention is more progressive and more practical, and seeks patent rights in accordance with the law.

  The above is a better embodiment of the present invention, and the present invention is not limited thereto. Equivalent changes and modifications made based on the scope of claims and the description of the present invention are not limited thereto. Are all within the scope of the claims of the present invention.

It is a three-dimensional assembly perspective view of the normally closed silent hub ratchet structure according to the embodiment of the present invention. It is a three-dimensional exploded view of a normally closed silent hub ratchet structure according to an embodiment of the present invention. It is side surface local sectional drawing of the normally closed type silence hub ratchet structure by embodiment of this invention. It is a three-dimensional conceptual diagram of the state in which the tooth disk seat of the normally closed silent hub ratchet structure according to the embodiment of the present invention rolls forward. FIG. 4 is a motion diagram of normal rotation of the AA cross section of the normally closed silent hub ratchet structure shown in FIG. 3 according to the embodiment of the present invention. It is a three-dimensional conceptual diagram of the state in which the tooth disk seat of the normally closed silent hub ratchet structure according to the embodiment of the present invention rotates reversely. FIG. 4 is a reverse operation motion diagram of the AA cross section of the normally closed silent hub ratchet structure shown in FIG. 3 according to the embodiment of the present invention. It is a three-dimensional conceptual diagram of a tooth disk seat having a normally closed silent hub ratchet structure according to an embodiment of the present invention. It is a three-dimensional conceptual diagram of a tooth disk seat according to another embodiment of the present invention. It is a three-dimensional exploded view of a conventional hub ratchet structure. It is a section conceptual diagram of the conventional hub ratchet structure.

The present invention 10 Tooth disk seat 101 Bearing 11 Shaft hole 12 Shaft 121 Stop sleeve 13 Control block 131 Check groove 14 Interlocking groove 141 Inner end 142 Outer end 15 Sliding part 16 Tooth disk groove 17 Tooth disk 20 Ratchet member 21 Ratchet seat 211 Via hole 212 Ratchet groove 213 Ratchet hole 214 Check block 215, 223 Tightening ring groove 216 Positioning block 217 Fixing hole 22 Ratchet 221 Spindle part 222 Interlocking pillar 23 Elastic member 231 Notch 232 Fixing part 30 Stop ring 31 Perforation 32 Positioning groove 33 Dump member 40 Hub casing 401 Bearing 41 Storage space 42 Bevel ring Conventional 50 Ratchet disk 51 Tooth disk 52 Ratchet seat 521 Ratchet hole 53 Ratchet 54 Elastic member 6 Hub 61 ratchet disc chamber 611 bevel 70 mandrel 71 stop ring 72 bearing 73 positioned member

Claims (4)

There is a penetrating shaft hole, and a shaft is pivotally attached to the shaft hole in accordance with the bearing, a stop sleeve is fitted on the shaft, and a plurality of control blocks are formed in a ring shape in the axial direction on the end face of the tooth disk seat. In the center of the control block, an interlocking groove is formed so as to be recessed, and the shaft end of the interlocking groove is inclined outward to form an inner end and an outer end, thereby controlling the tooth disk seat. A tooth disk seat in which a shaft is installed so as to surround the block end and a sliding part is formed, and
There are a ratchet seat and a ratchet. A via hole is formed in the ratchet seat, and a sliding portion of the tooth disk seat is fitted in the via hole, and a plurality of ratchet grooves are inclined inwardly on the outer wall surface of the ratchet seat. A ratchet hole is formed at a considerable depth of the ratchet groove, the ratchet is located in the ratchet groove, and the ratchet together forms a spindle part and is pivotally attached to the ratchet hole. A ratchet member in which an interlocking column protrudes at one end, both of the interlocking columns are slidably installed in an interlocking groove of the tooth disk seat, and a positioning block is installed on one side in the axial direction of the ratchet seat. There,
A tightening ring groove is formed in a ring shape on the outer wall surface of the ratchet seat and the outer surface of the ratchet so as to surround the via hole, and an elastic member is fitted in the tightening ring groove so that the ratchet A ratchet member configured to remain closed under normal conditions and not to be pulled outward by allowing the ratchet to stay in the ratchet groove,
Using the perforation, the shaft is fitted and positioned so that one surface is attached to one side of the ratchet seat, the positioning groove is formed, and the positioning groove and the positioning block of the ratchet seat engage and operate synchronously, A stop ring in which a dumping member is attached to the perforation, the inner edge of which closely adheres to the stop sleeve;
A storage space is formed in the axial direction, a bevel ring is locked to the inner wall, a built-in bearing is fitted to the shaft, and the control block of the retaining ring, ratchet member, and tooth disk seat is stored in the storage space. The bevel ring is in the form of a ring and a hub casing installed at the outer end of the ratchet;
Is a normally closed silent hub ratchet structure.   In the tooth disk seat, a plurality of tooth disk grooves are formed in the ring-shaped surface in the axial direction, and a plurality of tooth disks are fitted in the tooth disk groove, and the tooth disk seat and the tooth disk are synchronized with each other. The normally closed silent hub ratchet structure according to claim 1, wherein the normally closed silent hub ratchet structure is operable.   2. The normally closed silent hub ratchet structure according to claim 1, wherein the tooth disk seat is integrally formed with the tooth disk to form a single tooth disk.   In the tooth disk seat, a check groove is formed between the control blocks, and the check block protrudes from the ratchet seat slidably installed in the sliding portion of the tooth disk seat toward the tooth disk seat end, The normally closed silent hub ratchet structure according to claim 1, wherein the check block is slidable in the check concave groove, and the tooth disk seat and the ratchet seat are synchronized.

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